{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["concept or principle", "process parameter", "engineering feature", "machanical property", "manufacturing standard", "material"], "input": "In this study , this technique has been used for the production of large-scale tungsten linear structures ."}
{"concept or principle": [], "process parameter": [], "engineering feature": [], "machanical property": [], "manufacturing standard": [], "material": ["tungsten"]}